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Convert CSV to NDJSON JSON Lines

Convert every CSV row into newline-delimited JSON for APIs, logs, BigQuery, and developer data pipelines.

Quick start

Built for creating json lines for apis, logs, bigquery, and streaming-style pipelines.

Everything runs in your browser, so you can test the workflow with sample data when available before using production files.

Output: A newline-delimited JSON file.

  1. 1Upload a CSV.
  2. 2Review one JSON object per row.
  3. 3Download the NDJSON file.
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How to CSV to NDJSON

  1. 1Upload a CSV file
  2. 2Review the JSON Lines output
  3. 3Download the NDJSON file

Why Use This Tool?

  • ✓One JSON object per row
  • ✓Pipeline-friendly output
  • ✓Private browser processing
  • ✓No developer setup required

Frequently Asked Questions

What is NDJSON?

NDJSON, also called JSON Lines, stores one valid JSON object on each line.

Are nested columns created?

CSV values remain row properties; use JSON tools when you need custom nesting.